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    • 7. 发明授权
    • Time divisional duplex (TDD) system portable telephone relay device
    • 时分双工(TDD)系统便携式电话中继设备
    • US06342777B1
    • 2002-01-29
    • US09034191
    • 1998-03-03
    • Sunao Takahashi
    • Sunao Takahashi
    • A63B3700
    • H04B7/2609
    • A time division duplex (TDD) portable telephone relay device (and TDD system employing the same) for use with a radio base station and a portable telephone terminal within a terminal building, includes first and second distributors, a synthesizer, a predetermined-size (e.g., relatively small, internal) base station section, a position detecting unit, a synchronous receive section, and an exclusive telephone line connecting unit. With such a structure, transmission/reception using a frequency channel, other than frequency channels assigned to a radio zone where the terminal building exists, is conducted between the portable telephone terminal within the terminal building and the radio base station through the predetermined-size base station section. The predetermined-size base station section executes the operation adapted to TDD based on a synchronous signal from the synchronous receive section.
    • 一种与终端建筑物内的无线电基站和便携式电话终端一起使用的时分双工(TDD)便携式电话中继设备(以及采用该方式的TDD系统)包括第一和第二分配器,合成器,预定大小 例如相对较小的内部)基站部分,位置检测单元,同步接收部分和专用电话线连接单元。 通过这样的结构,通过分配给终端建筑物的无线区域的频率信道以外的频率信道的发送/接收,通过预定大小的基站在终端建筑物内的便携式电话终端与无线基站之间进行 车站部分。 预定大小的基站部分基于来自同步接收部分的同步信号执行适合于TDD的操作。